John Kaczmarek, MD
NPI 1134169204ActiveIndividual· Obstetrics & Gynecology· Waterbury, CT
Obstetrics & Gynecology (MD) in Waterbury, Connecticut, trained at State University of Ny Upstate Medical University (class of 1991). Their prescriptions cost Medicare Part D more than their services did: $73,050 for 462 claims, against $13,471 paid for services in 2024. Astellas Pharma US Inc was the largest of 2 companies reporting payments in 2025, $60.84 in all, mostly food and beverage.
Overview
| NPI | 1134169204 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 7, 2006 |
| Last updated in NPPES | Sep 7, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | 033371 | CT |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Obstetrics/Gynecology (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 72 |
|---|---|
| Services billed | 176 across 32 procedure codes |
| Paid by Medicare | $13,471 |
Part D prescriptions in 2024
| Prescriptions (claims) | 462 · 833 30-day fills |
|---|---|
| Patients | 138 |
| Total drug cost | $73,050 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | State University of Ny Upstate Medical University |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Obstetrics/Gynecology |
Medical group
- Physicians for Women's Health, LLCDanbury, CT · 318 clinicians
Hospital affiliations
- Saint Mary's HospitalWaterbury, CT
- Waterbury HospitalWaterbury, CT
Industry payments (Open Payments)
- 2025$60.84 · 3 payments from 2 companies
- 2024$216.70 · 11 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $44.39 | 2 |
| Mayne Pharma Commercial LLC | $16.45 | 1 |
What the 2025 payments were for
- Food and Beverage$60.84 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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